Two week old will only sleep in arms

I cuddle my baby a lot but my husband is due back to work on Monday and every night I have been up all night holding her because everytime she is placed down she wakes instantly. We've tried different swaddles and sleepsacks but she just doesn't like sleeping anywhere but in our arms. This wouldn't be an issue if she was our only child but we also have a 17 month old and I need to start sleeping some so I can take care of him all day by myself. Does anyone have any advice on getting her to sleep not in arms all night? I don't care if she wakes every few hours I just need to get some sleep too.

Bed sharing is not a possibility for us.